Hi,I talked Bethesda of the problem that Doom 1,2,3 and quake that have official Linux versions since a long time ago aren't available on steam for Linux. An employee answered me and said he has talked about it to his manager, but I'd better contact Steam also. Ps : Quake 4 also Mac support but not on Steam.If we want a Linux support for those games that already has one (but not on Steam) everybody should write to Bethesda and Steam support. Here is the Bethesda mail : "ESO English Support" <ESO_Help@helpmail.elderscrollsonline.com>